/* ═══════════════════════════════════════════
   Whetstones Ventures Pvt. Ltd. — Main CSS
   Theme: Industrial / Precision / Dark
   ═══════════════════════════════════════════ */

/* ── CSS VARIABLES ── */
:root {
  --clr-bg:        #0d0d16;
  --clr-surface:   #13131f;
  --clr-surface2:  #1a1a2e;
  --clr-border:    #2a2a42;
  --clr-accent:    #F5A623;
  --clr-accent2:   #E8841A;
  --clr-text:      #e8e8f0;
  --clr-muted:     #8888aa;
  --clr-white:     #ffffff;
  --ff-display:    'Barlow Condensed', sans-serif;
  --ff-body:       'Barlow', sans-serif;
  --max-w:         1200px;
  --radius:        6px;
  --transition:    0.25s ease;
}

/* ── RESET & BASE ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  background: var(--clr-bg);
  color: var(--clr-text);
  font-family: var(--ff-body);
  font-weight: 300;
  line-height: 1.7;
  overflow-x: hidden;
}

a { color: var(--clr-accent); text-decoration: none; }
a:hover { color: var(--clr-white); }

img { max-width: 100%; display: block; }

ul { list-style: none; }

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ── SECTION LABELS ── */
.section-label {
  display: inline-block;
  font-family: var(--ff-display);
  font-weight: 600;
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: var(--clr-accent);
  border: 1px solid var(--clr-accent);
  padding: 3px 12px;
  border-radius: 2px;
  margin-bottom: 16px;
  text-transform: uppercase;
}

h2 {
  font-family: var(--ff-display);
  font-weight: 800;
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin-bottom: 16px;
}

h3 {
  font-family: var(--ff-display);
  font-weight: 600;
  font-size: 1.35rem;
  letter-spacing: 0.01em;
  margin-bottom: 10px;
}

.section-intro {
  max-width: 620px;
  color: var(--clr-muted);
  font-size: 1.05rem;
  margin-bottom: 48px;
}

section {
  padding: 96px 0;
}

/* ── BUTTONS ── */
.btn-primary {
  display: inline-block;
  background: var(--clr-accent);
  color: #0d0d16;
  font-family: var(--ff-display);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.06em;
  padding: 13px 32px;
  border-radius: var(--radius);
  border: 2px solid var(--clr-accent);
  cursor: pointer;
  transition: var(--transition);
  text-transform: uppercase;
}

.btn-primary:hover {
  background: var(--clr-accent2);
  border-color: var(--clr-accent2);
  color: #0d0d16;
  transform: translateY(-2px);
}

.btn-outline {
  display: inline-block;
  background: transparent;
  color: var(--clr-text);
  font-family: var(--ff-display);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.06em;
  padding: 13px 32px;
  border-radius: var(--radius);
  border: 2px solid var(--clr-border);
  cursor: pointer;
  transition: var(--transition);
  text-transform: uppercase;
}

.btn-outline:hover {
  border-color: var(--clr-accent);
  color: var(--clr-accent);
  transform: translateY(-2px);
}

/* ════════════════════════════════
   HEADER
════════════════════════════════ */
#site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(13,13,22,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--clr-border);
  transition: var(--transition);
}

.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo-block {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-mark svg { width: 36px; height: 36px; }
.logo-mark.small svg { width: 28px; height: 28px; }

.logo-text {
  display: flex;
  flex-direction: column;
}

.company-name {
  font-family: var(--ff-display);
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: 0.03em;
  color: var(--clr-white);
  line-height: 1;
  text-transform: uppercase;
}

.company-suffix {
  font-family: var(--ff-display);
  font-weight: 300;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--clr-muted);
  text-transform: uppercase;
}

#main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

#main-nav a {
  font-family: var(--ff-display);
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  color: var(--clr-muted);
  text-transform: uppercase;
  transition: var(--transition);
}

#main-nav a:hover { color: var(--clr-white); }

#main-nav .nav-cta {
  background: var(--clr-accent);
  color: #0d0d16;
  padding: 8px 20px;
  border-radius: var(--radius);
}

#main-nav .nav-cta:hover {
  background: var(--clr-accent2);
  color: #0d0d16;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: var(--transition);
}

/* ════════════════════════════════
   HERO
════════════════════════════════ */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 120px 24px 80px;
  max-width: var(--max-w);
  margin: 0 auto;
  gap: 48px;
  position: relative;
}

.hero-bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(245,166,35,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245,166,35,0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: -1;
}

.hero-scanner-lines {
  position: fixed;
  inset: 0;
  background: linear-gradient(
    180deg,
    transparent 0%,
    rgba(245,166,35,0.015) 50%,
    transparent 100%
  );
  animation: scanLines 8s linear infinite;
  pointer-events: none;
  z-index: -1;
}

@keyframes scanLines {
  0% { background-position: 0 -100%; }
  100% { background-position: 0 200%; }
}

.hero-content {
  flex: 1;
  max-width: 640px;
}

.hero-badge {
  display: inline-block;
  font-family: var(--ff-display);
  font-weight: 600;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--clr-accent);
  border: 1px solid rgba(245,166,35,0.35);
  padding: 5px 14px;
  border-radius: 2px;
  margin-bottom: 24px;
  background: rgba(245,166,35,0.06);
  animation: fadeSlideUp 0.6s ease both;
}

.hero-title {
  font-family: var(--ff-display);
  font-weight: 800;
  font-size: clamp(3rem, 7vw, 6rem);
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--clr-white);
  margin-bottom: 24px;
  animation: fadeSlideUp 0.7s ease 0.1s both;
}

.hero-title .accent { color: var(--clr-accent); }

.hero-sub {
  font-size: 1.1rem;
  color: var(--clr-muted);
  max-width: 500px;
  margin-bottom: 36px;
  animation: fadeSlideUp 0.7s ease 0.2s both;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  animation: fadeSlideUp 0.7s ease 0.3s both;
}

.hero-visual {
  flex: 0 0 340px;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeSlideUp 0.8s ease 0.2s both;
}

/* Barcode Display */
.barcode-display {
  position: relative;
  background: var(--clr-surface2);
  border: 1px solid var(--clr-border);
  border-radius: 8px;
  padding: 32px 28px 24px;
  width: 300px;
  box-shadow: 0 0 60px rgba(245,166,35,0.08), 0 20px 60px rgba(0,0,0,0.5);
  overflow: hidden;
}

.barcode-bars {
  height: 120px;
  background-image: repeating-linear-gradient(
    90deg,
    var(--clr-accent) 0px,
    var(--clr-accent) var(--w, 3px),
    transparent var(--w, 3px),
    transparent calc(var(--w, 3px) + var(--gap, 5px))
  );
  background-size: 100% 100%;
  /* Generate varied bar widths using multiple gradients */
  background-image:
    linear-gradient(90deg, var(--clr-accent) 3px, transparent 3px 8px,
    var(--clr-accent) 8px 9px, transparent 9px 12px,
    var(--clr-accent) 12px 16px, transparent 16px 19px,
    var(--clr-accent) 19px 21px, transparent 21px 25px,
    var(--clr-accent) 25px 28px, transparent 28px 33px,
    var(--clr-accent) 33px 36px, transparent 36px 38px,
    var(--clr-accent) 38px 41px, transparent 41px 46px,
    var(--clr-accent) 46px 49px, transparent 49px 52px,
    var(--clr-accent) 52px 55px, transparent 55px 60px,
    var(--clr-accent) 60px 62px, transparent 62px 66px,
    var(--clr-accent) 66px 70px, transparent 70px 74px,
    var(--clr-accent) 74px 76px, transparent 76px 80px,
    var(--clr-accent) 80px 84px, transparent 84px 88px,
    var(--clr-accent) 88px 90px, transparent 90px 95px,
    var(--clr-accent) 95px 98px, transparent 98px 102px,
    var(--clr-accent) 102px 104px, transparent 104px 108px,
    var(--clr-accent) 108px 111px, transparent 111px 115px,
    var(--clr-accent) 115px 118px, transparent 118px 122px,
    var(--clr-accent) 122px 124px, transparent 124px 128px,
    var(--clr-accent) 128px 132px, transparent 132px 136px,
    var(--clr-accent) 136px 138px, transparent 138px 142px,
    var(--clr-accent) 142px 146px, transparent 146px 152px,
    var(--clr-accent) 152px 155px, transparent 155px 158px,
    var(--clr-accent) 158px 161px, transparent 161px 166px,
    var(--clr-accent) 166px 169px, transparent 169px 172px,
    var(--clr-accent) 172px 175px, transparent 175px 180px,
    var(--clr-accent) 180px 183px, transparent 183px 187px,
    var(--clr-accent) 187px 190px, transparent 190px 194px,
    var(--clr-accent) 194px 197px, transparent 197px 200px,
    var(--clr-accent) 200px 202px, transparent 202px 206px,
    var(--clr-accent) 206px 210px, transparent 210px 215px,
    var(--clr-accent) 215px 218px, transparent 218px 222px,
    var(--clr-accent) 222px 225px, transparent 225px 230px,
    var(--clr-accent) 230px 232px, transparent 232px 236px,
    var(--clr-accent) 236px 240px, transparent 240px 244px
    );
  margin-bottom: 14px;
  border-radius: 2px;
  opacity: 0.85;
}

.scan-line {
  position: absolute;
  left: 28px; right: 28px;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(255, 80, 80, 0.9), transparent);
  box-shadow: 0 0 8px rgba(255, 80, 80, 0.8);
  top: 32px;
  animation: scanMove 2.5s ease-in-out infinite;
}

@keyframes scanMove {
  0%   { top: 32px; opacity: 0; }
  10%  { opacity: 1; }
  90%  { opacity: 1; }
  100% { top: 152px; opacity: 0; }
}

.barcode-num {
  display: block;
  font-family: 'Courier New', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  color: var(--clr-muted);
  text-align: center;
}

@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ════════════════════════════════
   ABOUT
════════════════════════════════ */
#about {
  background: var(--clr-surface);
  border-top: 1px solid var(--clr-border);
  border-bottom: 1px solid var(--clr-border);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-text p {
  color: var(--clr-muted);
  margin-bottom: 16px;
}

.stats-row {
  display: flex;
  gap: 36px;
  margin-top: 32px;
}

.stat strong {
  display: block;
  font-family: var(--ff-display);
  font-weight: 800;
  font-size: 2rem;
  color: var(--clr-accent);
  line-height: 1;
}

.stat span {
  font-size: 0.8rem;
  color: var(--clr-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag-cloud span {
  font-family: var(--ff-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--clr-muted);
  border: 1px solid var(--clr-border);
  padding: 6px 14px;
  border-radius: 3px;
  transition: var(--transition);
  cursor: default;
}

.tag-cloud span:hover {
  border-color: var(--clr-accent);
  color: var(--clr-accent);
}

/* ════════════════════════════════
   PRODUCTS
════════════════════════════════ */
#products { background: var(--clr-bg); }

.product-categories {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.prod-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: 8px;
  padding: 28px;
  position: relative;
  transition: var(--transition);
}

.prod-card:hover {
  border-color: rgba(245,166,35,0.4);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.4), 0 0 30px rgba(245,166,35,0.06);
}

.prod-card.featured {
  border-color: rgba(245,166,35,0.3);
  background: linear-gradient(135deg, var(--clr-surface2) 0%, var(--clr-surface) 100%);
}

.prod-badge {
  position: absolute;
  top: 16px; right: 16px;
  font-family: var(--ff-display);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--clr-accent);
  border: 1px solid var(--clr-accent);
  padding: 2px 8px;
  border-radius: 2px;
  text-transform: uppercase;
}

.prod-icon {
  width: 56px; height: 56px;
  margin-bottom: 18px;
}

.prod-icon svg { width: 56px; height: 56px; }

.oem-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.oem {
  font-family: var(--ff-display);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--clr-accent2);
  background: rgba(232,132,26,0.1);
  border: 1px solid rgba(232,132,26,0.25);
  padding: 2px 8px;
  border-radius: 2px;
  text-transform: uppercase;
}

.prod-features {
  border-top: 1px solid var(--clr-border);
  padding-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.prod-features li {
  font-size: 0.85rem;
  color: var(--clr-muted);
  padding-left: 16px;
  position: relative;
}

.prod-features li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--clr-accent);
  font-size: 0.7rem;
}

/* ════════════════════════════════
   RFID
════════════════════════════════ */
#rfid {
  background: var(--clr-surface);
  border-top: 1px solid var(--clr-border);
  border-bottom: 1px solid var(--clr-border);
}

.rfid-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.rfid-card {
  background: var(--clr-surface2);
  border: 1px solid var(--clr-border);
  border-radius: 8px;
  padding: 32px 28px;
  transition: var(--transition);
}

.rfid-card:hover {
  border-color: rgba(245,166,35,0.4);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.4);
}

.rfid-card.featured-rfid {
  border-color: rgba(245,166,35,0.25);
}

.rfid-wave {
  width: 64px; height: 64px;
  margin-bottom: 20px;
}

.rfid-wave svg { width: 64px; height: 64px; }

/* ════════════════════════════════
   POS & PANEL PC
════════════════════════════════ */
#pos { background: var(--clr-bg); }

.pos-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 40px;
}

.pos-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: 8px;
  padding: 32px 28px;
  transition: var(--transition);
}

.pos-card:hover {
  border-color: rgba(245,166,35,0.4);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.4);
}

.pos-icon {
  width: 72px; height: 56px;
  margin-bottom: 20px;
}

.pos-icon svg { width: 72px; height: 56px; }

.advantech-note {
  text-align: center;
  border: 1px solid var(--clr-border);
  padding: 16px 24px;
  border-radius: var(--radius);
  font-family: var(--ff-display);
  letter-spacing: 0.05em;
  color: var(--clr-muted);
  font-size: 0.95rem;
}

.advantech-note strong {
  color: var(--clr-accent);
  font-size: 1.1rem;
  margin: 0 8px;
}

/* ════════════════════════════════
   BRANDS
════════════════════════════════ */
#brands {
  background: var(--clr-surface);
  border-top: 1px solid var(--clr-border);
  border-bottom: 1px solid var(--clr-border);
}

.brands-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.brand-tile {
  background: var(--clr-surface2);
  border: 1px solid var(--clr-border);
  border-radius: 8px;
  padding: 28px 24px;
  text-align: center;
  transition: var(--transition);
}

.brand-tile:hover {
  border-color: rgba(245,166,35,0.4);
  transform: translateY(-3px);
}

.brand-tile-wide {
  grid-column: span 3;
}

.brand-logo {
  font-family: var(--ff-display);
  font-weight: 800;
  font-size: 1.8rem;
  letter-spacing: 0.1em;
  color: var(--clr-accent);
  margin-bottom: 10px;
}

.brand-tile p {
  font-size: 0.85rem;
  color: var(--clr-muted);
}

/* ════════════════════════════════
   CONTACT
════════════════════════════════ */
#contact { background: var(--clr-bg); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 56px;
  align-items: start;
}

.contact-item {
  display: flex;
  gap: 16px;
  margin-bottom: 28px;
  align-items: flex-start;
}

.contact-icon {
  font-size: 1.4rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-item strong {
  display: block;
  font-family: var(--ff-display);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: 4px;
}

.contact-item p {
  color: var(--clr-muted);
  font-size: 0.95rem;
}

.contact-item a {
  color: var(--clr-text);
}

.contact-form-wrap {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: 8px;
  padding: 36px;
}

.contact-form h3 {
  margin-bottom: 24px;
  color: var(--clr-white);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 12px;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  background: var(--clr-surface2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 12px 16px;
  color: var(--clr-text);
  font-family: var(--ff-body);
  font-size: 0.9rem;
  transition: var(--transition);
  outline: none;
  margin-bottom: 12px;
}

.contact-form select { color: var(--clr-muted); }
.contact-form select option { background: var(--clr-surface2); color: var(--clr-text); }

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  border-color: var(--clr-accent);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: var(--clr-muted);
}

.contact-form textarea { resize: vertical; }

.contact-form .btn-primary {
  width: 100%;
  text-align: center;
  margin-top: 4px;
  font-size: 1rem;
}

.form-note {
  margin-top: 12px;
  font-size: 0.9rem;
}

/* ════════════════════════════════
   FOOTER
════════════════════════════════ */
#site-footer {
  background: var(--clr-surface);
  border-top: 1px solid var(--clr-border);
  padding: 40px 0;
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-brand .company-name {
  font-size: 0.95rem;
  display: block;
}

.tagline {
  display: block;
  font-size: 0.7rem;
  color: var(--clr-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.footer-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-links a {
  font-family: var(--ff-display);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--clr-muted);
  text-transform: uppercase;
  transition: var(--transition);
}

.footer-links a:hover { color: var(--clr-accent); }

.footer-copy {
  font-size: 0.75rem;
  color: var(--clr-muted);
  width: 100%;
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid var(--clr-border);
  margin-top: 16px;
}

/* ════════════════════════════════
   RESPONSIVE
════════════════════════════════ */
@media (max-width: 1024px) {
  .product-categories { grid-template-columns: 1fr 1fr; }
  .brands-grid { grid-template-columns: 1fr 1fr; }
  .brand-tile-wide { grid-column: span 2; }
}

@media (max-width: 768px) {
  #main-nav { display: none; flex-direction: column; position: absolute; top: 70px; left: 0; right: 0; background: var(--clr-surface); border-bottom: 1px solid var(--clr-border); padding: 24px; gap: 18px; }
  #main-nav.open { display: flex; }
  .hamburger { display: flex; }

  #hero {
    flex-direction: column;
    min-height: auto;
    padding-top: 100px;
    text-align: center;
  }

  .hero-actions { justify-content: center; }
  .hero-visual { display: none; }

  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .product-categories { grid-template-columns: 1fr; }
  .rfid-grid { grid-template-columns: 1fr; }
  .pos-grid { grid-template-columns: 1fr; }
  .brands-grid { grid-template-columns: 1fr; }
  .brand-tile-wide { grid-column: span 1; }
  .contact-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .stats-row { gap: 20px; }
}

@media (max-width: 480px) {
  h2 { font-size: 1.8rem; }
  .hero-title { font-size: 2.8rem; }
  section { padding: 60px 0; }
  .contact-form-wrap { padding: 24px; }
}